The invention discloses error test and compensation methods of an induction synchronizer angle measurement system utilizing a polygon. By adopting the methods provided by the invention to carry out error testing and compensation, a relatively good global compensation effect is obtained, and the problem of other testing and compensation methods utilizing the polygon that the compensation effect is only realized at error sampling points and is unavailable at non-sampling points is solved. By adopting the polygon mode, the error testing and compensation of the induction synchronizer angle measurement system are realized, and compared with a high precision raster mode, the methods provided by the invention is wider in engineering applicability.

Zero error test method and comprehensive error compensation method of angle measurement system

The invention relates to a method for measuring absolute angle and rotating angle of a universal horizontal turntable. A measuring system comprises a broadband light source, an aperture stop, a light splitting mirror, a reflective diffraction grating, a plane mirror pair, a focusing lens, a fiber optic spectrometer and a calculation module. The method comprises the following steps of enabling the broadband light source to output a light beam, enabling the light beam to penetrate through the light splitting mirror and the plane mirror, and diffracting and returning the light beam by the grating; reflecting and sampling the diffraction light by the light splitting mirror, focusing by the lens, and enabling the light to enter the fiber optic spectrometer; enabling the fiber optic spectrometer to collect the spectrum information; enabling the computer to determine an incident angle of an incident light beam on the grating according to the wavelength of the collected spectrum peak, namely the absolute angle between the incident light beam and the reflective diffraction grating; determining the initial angle of the universal horizontal turntable, rotating the universal horizontal turntable, and determining the rotating angle and the absolute angle according to the change of the peak wavelength. The method has the advantages that the method is especially suitable for the precision correction and measurement of the rotating angle and the absolute angle in industries and scientific research; the operation is simple, the angle measuring range is wide, the range accuracy is high, and the like.

Method for measuring absolute angle and rotating angle of universal horizontal turntable

The invention relates to a method for reducing a measurement error of a rotating accelerometer gravity gradiometer by using a fiber optic gyroscope, which comprises the steps of (1), installing the fiber optic gyroscope on a rotating shaft of a single-shaft rotating device of the rotating accelerometer gravity gradiometer; (2), detecting the uniformity in position of an output angle of an optical grating angular encoder when the rotating accelerometer gravity gradiometer is in operation, wherein the error of the optical grating angular encoder is indicated to be mainly an eccentricity error when output of the fiber optic gyroscope is similar to a sine curve; and (3), carrying out integration processing on data measured by the fiber optic gyroscope and compensating the eccentricity error of the optical grating angular encoder, and thus reducing adverse impacts for the gradient measurement precision. Disclosed by the invention is a method which is scientific in design, simple to operate and wide in measurement angle and compensates the eccentricity error of the optical grating angular encoder by using the fiber optic gyroscope so as to reduce the measurement error of the rotating accelerometer gravity gradiometer. By using the method disclosed by the invention, defects of a traditional optical measurement method are overcome, the measurement difficulty can be reduced, the measurement efficiency can be improved, and the compensation precision can be improved.

Method for reducing measurement error of rotating accelerometer gravity gradiometer by using fiber optic gyroscope

The invention relates to a circular grating installation error calibration and correction method based on a single reading head, relating to the precision machinery field and solving the problems that the conventional precision angle measurement cannot achieve low cost, high precision, high reliability, and high temperature adaptability. The method includes that a dial gauge is used to guarantee the circular grating installation displacement error is within 10[mu]m, a metal polyhedron and a high-precision autocollimator are adopted to carry out the multi-area calibration on the circumference angle measurement error caused by the displacement error, and the angle measurement error is corrected in real time by means of least squares polynomial curve fitting in the area. The error caused by the displacement can be directly converted to the circumference angle measurement error through the space coordinate transformation method, the error correction parameters can be fitted by means of a multi-area precision calibration method, the real-time correction can be carried out during the measurement, therefore, the installation requirement of circular gratings can be reduced, and the ideal angle measurement precision can be realized by the single reading head.

Circular grating installation error calibration and correction method based on single reading head

The invention belongs to the precision mechanical error field and displays a device and a method for measuring a main shaft rotation error by using circular gratings and autocollimators. The measuringdevice is formed by a set of double reading head circular gratings installed on a main shaft, a plane mirror attached to a shaft bottom end and a set of self-made autocollimators. When the main shafthas a radial rotation error, a radial motion error measured by the circular gratings and a deflection error measured by the autocollimators are combined to calculate the radial rotation error at anypoint on the shaft, and then, the motion state of the shaft during a rotation process is analyzed. By using the structure of the invention, the influences of a main shaft circularity, surface roughness and the changes of a load on the main shaft on a measurement result can be eliminated. And simultaneously, the device can be used to realize the high precision positioning of a main shaft rotation angle.

Device and method for measuring main shaft rotation error by using circular gratings and autocollimators

The invention discloses a rotary transformer static and dynamic angle measuring accuracy calibration device and a rotary transformer static and dynamic angle measuring accuracy calibration method. The method is based on an external reference comparison method. The calibration device mainly comprises a driving turntable, a mechanical shaft system, a metal polygon, a photoelectric auto-collimator, a circular grating and the like. The metal polygon and the photoelectric auto-collimator are utilized for carrying out static angle measuring accuracy calibration on a rotary transformer, in addition, calibration and compensation are carried out on the circular grating, and installation errors are corrected. When the driving turntable drives the shaft system to rotate, the circular grating is utilized for carrying out dynamic angle measuring accuracy calibration on the rotary transformer. The device and the method have the advantages that different external reference characteristics are combined, the same device is utilized for completing the static and dynamic calibration of the rotary transformer, the comprehensive analysis and the error compensation of the angle measuring accuracy of the rotary transformer are realized, the improvement of an angle measuring system is favorably realized, and the angle measuring accuracy is improved.

Rotary transformer static and dynamic angle measuring accuracy calibration device and method

Popular Tasks used by Researchers

How can I help with your research?

Get more enhanced response by uploading the PDFs you want me to reference.

No relevant PDFs in your library

SciSpace is the AI research assistant for academics. Run systematic literature reviews on 280M+ papers, and write papers with cited sources. Trusted by 1M+ students, PhDs & researchers.

SciSpace | AI for Research

We encountered an error while loading the panel. Please try refreshing the page.

Something went wrong

Analyze PDFs

Code & Manuscripts

Funding & Grants

Literature & Patents

Medical & Clinical Data

Systematic Review

Visualize & Present

Web & Data

Build a Google Scholar-like website for your research.

Build a website

Create charts and images for your research

Create a Chart

Write a paper for submission to a journal

Draft a manuscript

Patent Search

Design eye-catching scientific posters in minutes.

Scientific Poster Generation

Systematic Literature Review

Anyone with the link can view this chat. You can switch it back to private anytime.

One task is running at the moment. Your messages will be shown right after.

Drag and drop or click here to browse

Loved by <highlight>1 million+</highlight> researchers

Extract a list of specific topics and their sources from unstructured text

Topics

Compare and analyze relevant papers that matches with your search

Papers

Get insights from PDFs and bookmarked papers from your library

My library

Recent searches

Try searching for:

Catch AI-generated content in scholarly and non-scholarly content

{ai} Detector

Ai Writer

Get PDF Summaries, highlighted text explanations 

Chat with PDF

Effortlessly create in-text citations and bibliographies in APA and 2,500 other formats

Citation generator

Get explanations, summaries, and answers on academic papers

Ease up your research workflow with {scispace}'s cohort of exciting AI tools

Elevate your academic writing skills and convey your ideas the way you want

Paraphraser

Explore our range of reading and writing tools

Your file is being prepared and should be ready in a few minutes. If it's a large file, it might take a bit longer. You can close this window, and we'll email you the file when it's done.

You have reached a maximum limit of <strong>{limit}</strong> columns in the table. Remove at least <strong>1</strong> column to add or create another one.

Jia Jianjun

Author Tools

Chat about Author

Papers

Rotary transformer static and dynamic angle measuring accuracy calibration device and method